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Research on power system harmonic state estimation
2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011The concepts, functions and implementation methods of power system harmonic state estimation (PSHSE) are discussed in this paper. The harmonic state estimation methods which are being used at present are reviewed. Selecting node voltage phasors as state variables, node voltage pahsors, branch current phasors and injected current phasors as measurements
Yiquan Zhang, Yonghai Xu, Yuanyuan Xu
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Application of harmonic state estimation to a distribution system
2017 IEEE Manchester PowerTech, 2017The harmonic levels in a distribution system are becoming more important as many new power electronic based devices are being deployed. In order to manage the harmonic levels, it is important to know them. Direct measurement of harmonics at all locations is too costly, yet obtaining a system-wide view is important.
Diwakar Bhujel +2 more
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On harmonic state estimation and the evaluation of harmonic power contributions from sources
IEEE PES General Meeting, 2010A new approach to harmonic state estimation is proposed by firstly classifying the network nodes into four types. Classification of a particular node into one of the four types is based on the availability or otherwise of node voltage and nodal harmonic injection current measurement at the node.
H T Nguyen, J J Yang, S S Choi
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A method of utilising non-source measurements for harmonic state estimation
Electric Power Systems Research, 2000Abstract A power system reduction method is described for use in harmonic state estimation (HSE). The new method uses harmonic measurements at non-harmonic-source buses, such as those of generators, without loads or linear loads, to estimate the system-wide harmonic levels.
Kit Po Wong, Jos Arrillaga
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State Estimation for the Localization of Harmonic Sources in Electric Distribution Systems
IEEE Transactions on Instrumentation and Measurement, 2008Throughout the last years, with the liberalization of the energy market, the localization of the sources of power quality disturbances has become a nodal point for operators and customers. In the liberalized market, knowledge of the system status, along with the uncertainty affecting the estimated data, is required to operate management and control ...
D'ANTONA G., MUSCAS, CARLO, SULIS, SARA
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Sensitivity analysis of method for harmonic state estimation in the power system
Electric Power Systems Research, 2018In this paper, a new algorithm for harmonic state estimation in power systems is represented. The algorithm is based on node voltage method, Kron reduction matrix, modeling of power system in frequency domain using phase values and optimization genetic algorithm. The algorithm uses measured voltage and current harmonics as an input data, with partially
Bečirović, Vedad +2 more
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Harmonic state estimation in distribution network based on fifth harmonic current characteristic
2014 16th International Conference on Harmonics and Quality of Power (ICHQP), 2014Reproductive simulation of the measurement data by the harmonic analyze is start point to understand harmonic voltage distortion mechanism, but the method to estimate the harmonics distribution among the many utility customers has not been established.
Naotaka Okada, Kenji Yukihira
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Harmonic state estimation: a method for remote harmonic assessment in a deregulated utility network
DRPT2000. International Conference on Electric Utility Deregulation and Restructuring and Power Technologies. Proceedings (Cat. No.00EX382), 2002In a deregulated electricity industry, new concerns have emerged regarding the quality of power supply as each company involved will focus on its own objectives and interest. One of the main concerns regarding the quality of power supply is the harmonic pollution. Several harmonic state estimation (HSE) techniques have been proposed for harmonic source
S.S. Matair +4 more
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Harmonic State Estimation and Transient State Estimation
2006This thesis describes the algorithms and techniques developed for harmonic state estimation and transient state estimation, which can be used to identify the location of disturbance sources in an electrical power system. The previous harmonic state estimation algorithm is extended to include the estimation of time-varying harmonics using an adaptive ...
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Identification of harmonic sources by a state estimation technique
IEEE Transactions on Power Delivery, 1989A reverse power flow procedure is described to identify the sources of harmonic signals in electric power systems. Methods have been reported elsewhere to analyze the propagation of these harmonics signals throughout the network. Here the reverse problem of how to identify the source (and potentially the type) of harmonic signals is considered.
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